Track cmd entrypoint

.gitignore

@@ -1,4 +1,4 @@
 config.json
-mqqt-scrubber
+/mqqt-scrubber
 bin/
 dist/

cmd/mqqt-scrubber/main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"log/slog"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"mqqt-scrubber/internal/config"
+	"mqqt-scrubber/internal/health"
+	"mqqt-scrubber/internal/influx"
+	"mqqt-scrubber/internal/mqtt"
+	"mqqt-scrubber/internal/pipeline"
+)
+
+func main() {
+	configPath := flag.String("config", "", "path to config JSON file")
+	flag.Parse()
+
+	cfg, err := config.Load(*configPath)
+	if err != nil {
+		slog.Error("failed to load config", "error", err)
+		os.Exit(1)
+	}
+
+	logger := newLogger(cfg.App.LogLevel)
+	slog.SetDefault(logger)
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	influxClient := influx.NewClient(cfg.Influx)
+	service := pipeline.NewService(cfg, influxClient)
+	subscriber := mqtt.NewSubscriber(cfg.MQTT, service.Enqueue)
+	healthServer := health.NewServer(cfg.App.HealthAddress, func() any { return service.Snapshot() })
+
+	if err := subscriber.Start(); err != nil {
+		slog.Error("failed to start mqtt subscriber", "error", err)
+		os.Exit(1)
+	}
+	defer subscriber.Stop()
+	healthServer.Start()
+	defer func() {
+		shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		if err := healthServer.Shutdown(shutdownCtx); err != nil {
+			slog.Warn("health server shutdown failed", "error", err)
+		}
+	}()
+
+	slog.Info("service started",
+		"mqtt_broker", cfg.MQTT.Broker,
+		"topics", cfg.MQTT.Topics,
+		"influx_url", cfg.Influx.URL,
+		"database", cfg.Influx.Database,
+		"health_address", cfg.App.HealthAddress,
+	)
+
+	if err := service.Run(ctx); err != nil {
+		slog.Error("service stopped with error", "error", err)
+		os.Exit(1)
+	}
+
+	slog.Info("service stopped")
+}
+
+func newLogger(level string) *slog.Logger {
+	var slogLevel slog.Level
+
+	switch level {
+	case "debug":
+		slogLevel = slog.LevelDebug
+	case "warn":
+		slogLevel = slog.LevelWarn
+	case "error":
+		slogLevel = slog.LevelError
+	default:
+		slogLevel = slog.LevelInfo
+	}
+
+	handler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slogLevel})
+	return slog.New(handler)
+}